package cn.eric.game.swing;

import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;

public class TestList {
	private JFrame mainFrame;
	   private JLabel headerLabel;
	   private JLabel statusLabel;
	   private JPanel controlPanel;

	   public TestList(){
	      prepareGUI();
	   }

	   public static void main(String[] args){
		   TestList  swingControlDemo = new TestList();      
	      swingControlDemo.showListDemo();
	   }

	   private void prepareGUI(){
	      mainFrame = new JFrame("Java Swing Examples");
	      mainFrame.setSize(400,400);
	      mainFrame.setLayout(new GridLayout(3, 1));
	      mainFrame.addWindowListener(new WindowAdapter() {
	         public void windowClosing(WindowEvent windowEvent){
	            System.exit(0);
	         }        
	      });    
	      headerLabel = new JLabel("", JLabel.CENTER);        
	      statusLabel = new JLabel("",JLabel.CENTER);    

	      statusLabel.setSize(350,100);

	      controlPanel = new JPanel();
	      controlPanel.setLayout(new FlowLayout());

	      mainFrame.add(headerLabel);
	      mainFrame.add(controlPanel);
	      mainFrame.add(statusLabel);
	      mainFrame.setVisible(true);  
	   }

	   private void showListDemo(){                                       

	      headerLabel.setText("Control in action: JList"); 

	      final DefaultListModel fruitsName = new DefaultListModel();

	      fruitsName.addElement("Apple");
	      fruitsName.addElement("Grapes");
	      fruitsName.addElement("Mango");
	      fruitsName.addElement("Peer");

	      final JList fruitList = new JList(fruitsName);
	      fruitList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
	      fruitList.setSelectedIndex(0);
	      fruitList.setVisibleRowCount(3);        

	      JScrollPane fruitListScrollPane = new JScrollPane(fruitList);    

	      final DefaultListModel vegName = new DefaultListModel();

	      vegName.addElement("Lady Finger");
	      vegName.addElement("Onion");
	      vegName.addElement("Potato");
	      vegName.addElement("Tomato");

	      final JList vegList = new JList(vegName);
	      vegList.setSelectionMode(
	         ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
	      vegList.setSelectedIndex(0);
	      vegList.setVisibleRowCount(3);        

	      JScrollPane vegListScrollPane = new JScrollPane(vegList);       

	      JButton showButton = new JButton("Show");

	      showButton.addActionListener(new ActionListener() {
	         public void actionPerformed(ActionEvent e) { 
	            String data = "";
	            if (fruitList.getSelectedIndex() != -1) {                     
	               data = "Fruits Selected: " + fruitList.getSelectedValue(); 
	               statusLabel.setText(data);
	            }
	            if(vegList.getSelectedIndex() != -1){
	               data += " Vegetables selected: ";
	               for(Object vegetable:vegList.getSelectedValues()){
	                  data += vegetable + " ";
	               }
	            }
	            statusLabel.setText(data);
	         }
	      }); 

	      controlPanel.add(fruitListScrollPane);    
	      controlPanel.add(vegListScrollPane);    
	      controlPanel.add(showButton);    
		  
	      mainFrame.setVisible(true);             
	   }
}
